Searching for: Optionals in Python
The for loop is used to iterate through a sequence. When a range is provided as the sequence, it behaves like a C-style for loop. For all other sequences (arrays, etc.), it behaves like a for each loop.
List comprehension is used to dynamically generate lists.
Tuples are used to store multiple items sequentially in one variable. Similar to lists, but immutable.
A function is a block of code that can be called from another location in the program or class.
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